Perspective initial commit
Modified config loading from configuration, added a third command line parameter
Implement lock in Param for extern. Add example with media ImageGenerator.
Do we need to block it if changed by extern?
Fixed private config
Changed for more appropriate info on filterchain loading
Fixed stdout messages about config reading from the system
Simplify configuration between private and public.
- fix mainserver log path.
- add more print to show what log is loaded
Not loading private filter if inactive.
Merge pull request #1 from mathben/perspective

Perspective
Merge pull request #125 from kritchie/perspective

Perspective
Fix when param missing lock var (lock is None)
config: Propose timestamp with 24 hours for log file.
Add feature keep_alive_media
This will not close media if opened. Useful if take a long time to open it.
add fourth column (prvw) in rec hist

The purpose of that column is to watch the rec file in preview.
Double-click on the cell (eye icon) to execution action.
Param: notify send itself, and add lock and unlock.
bug fixed. Preview is created on a new execution.
Fix lock param from server update.
Move publisher in resource.
Move publish media and filter info into his class.
Remove log from update param.
Merge pull request #126 from seblago/dev

add fourth column (prvw) in rec hist
Fix when missing private_config.